34121666421 has 20 divisors (see below), whose sum is σ = 51689794464. Its totient is φ = 22427382600.

The previous prime is 34121666413. The next prime is 34121666443. The reversal of 34121666421 is 12466612143.

It is not a de Polignac number, because 34121666421 - 2³ = 34121666413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34121666221) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2960835 + ... + 2972336.

Almost surely, 2^34121666421 is an apocalyptic number.

It is an amenable number.

34121666421 is a deficient number, since it is larger than the sum of its proper divisors (17568128043).

34121666421 is an equidigital number, since it uses as much as digits as its factorization.

34121666421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5933254 (or 5933245 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The spelling of 34121666421 in words is "thirty-four billion, one hundred twenty-one million, six hundred sixty-six thousand, four hundred twenty-one".